我有以下结构为我的React.js应用程序使用React路由器:

var Dashboard = require('./Dashboard');
var Comments = require('./Comments');

var Index = React.createClass({
  render: function () {
    return (
        <div>
            <header>Some header</header>
            <RouteHandler />
        </div>
    );
  }
});

var routes = (
  <Route path="/" handler={Index}>
    <Route path="comments" handler={Comments}/>
    <DefaultRoute handler={Dashboard}/>
  </Route>
);

ReactRouter.run(routes, function (Handler) {
  React.render(<Handler/>, document.body);
});

我想把一些属性传递给Comments组件。

(通常我会这样做,如<Comments myprop="value" />)

用React路由器最简单和正确的方法是什么?


当前回答

对于react-router 2.5.2,解决方案非常简单:

    //someConponent
...
render:function(){
  return (
    <h1>This is the parent component who pass the prop to this.props.children</h1>
    {this.props.children && React.cloneElement(this.props.children,{myProp:'value'})}
  )
}
...

其他回答

对于react-router 2.5.2,解决方案非常简单:

    //someConponent
...
render:function(){
  return (
    <h1>This is the parent component who pass the prop to this.props.children</h1>
    {this.props.children && React.cloneElement(this.props.children,{myProp:'value'})}
  )
}
...

React路由器的问题是它会渲染你的组件,因此会阻止你传入道具。另一方面,导航路由器允许你渲染你自己的组件。这意味着您不必像下面的代码和附带的JsFiddle显示那样跳过任何障碍来传递道具。

var Comments = ({myProp}) => <div>{myProp}</div>;

var stateNavigator = new Navigation.StateNavigator([
  {key:'comments', route:''}
]);

stateNavigator.states.comments.navigated = function(data) {
  ReactDOM.render(
    <Comments myProp="value" />,
    document.getElementById('content')
  );
}

stateNavigator.start();

用一个无状态的函数组件包装它:

<Router>
  <Route 
    path='/' 
    component={({children}) => 
      <MyComponent myProp={'myVal'}>{children}</MyComponent/>
    }/>
</Router>
class App extends Component {
  constructor(props){
    super(props);

    this.state = {
      data:null
    }


  }
 componentDidMount(){
   database.ref().on('value', (snapshot) =>{
     this.setState({
       data : snapshot.val()
      })
   });
 }

  render(){
  //  const { data } = this.state
  return (
    <BrowserRouter>
      <Switch>
        <Route exact path = "/" component = { LandingPage }  />
        <Route 
          path='/signup' 
          render = { () => <Signup  data = {this.state.data} />} />
        </Switch>
    </BrowserRouter>

  );
  }
};

export default App;

在1.0和2.0中,你可以使用Router的createElement道具来指定如何创建目标元素。文档来源

function createWithDefaultProps(Component, props) {
    return <Component {...props} myprop="value" />;
}

// and then    
<Router createElement={createWithDefaultProps}>
    ...
</Router>